race fuel in 11 to 1 400ex

[asmith]

Do I need to run race gas in my 11 to 1 Wiseco pistoned 397 ex?most of its time is spent in glamis, but i also do desert riding.Any one know the true compresion ratio with Cometic gaskets?Right now i'm running 50/50 110 with 91 octane.

for that compresion its ok to run pump gas but race gas would help keep the temps down

[tprender]

Run 50/50, that should be all that is needed for that engine.

well most compinees say its safe to run pump gas on 11-1 compression but 10-1 is the highest u should go on pump gas cuz any higher compression with pump gas u start having problums.